Finding the Fourth Proportional to 22,318.34, 30,800.98 and 12,758.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,318.34 : 30,800.98 = 12,758.59 : x
2. Step 2: Convert to fraction form
   22,318.34/30,800.98 = 12,758.59/x
3. Step 3: Cross multiply
   22,318.34x = 30,800.98 × 12,758.59
4. Step 4: Simplify right side
   22,318.34x = 392,977,079.12
5. Step 5: Solve for x
   x = 392,977,079.12/22,318.34
6. Step 6: Final answer
   x = 17,607.81